In all the years of shooting Pentax I have "never ever" heard on the forums or other, of a breakdown of their SR system...not once!

The Giros are in chip tuning fork type wafer ceramic crystals and produce a voltage by inertia, similar to crystal ceramic record player pick ups, there is nothing to go wrong there. The sensor moves between ball bearings and again reliability is extremely high.

Of course there's no viewfinder VR with a DSLR, where there is with ML.

Reliability will be higher with IBIS compared with ILIS just because of better support of the sensor than for the floating elements in a lens...

..not to mention the clever tricks Pentax have done with the system like; astrotracer (star tracking) pixel shifting ( 4 stacked images to get RBG at every pixel) simulated LPF as well as image composition adjustment, all very powerful tools indeed!

That's how I meant it. Plus, on a DSLR, ILIS will help the AF do its job, too, especially with long focal lengths.

-- Markus

I have witnessed a blatant IS failure among my gear, once. The stabilizer on my old Canon 17-55/2.8 lens went out after just 2 months of usage (I bought the lens brand new) and started acting erratically. The lens was repaired for this failure (and another unrelated one) free of charge under warranty. Just FYI.

Strangely when turning on the camera the VR works while half pressing the shutter button, let go and the image in the viewfinder drops twice (clunk cluck and dropping way down) as the VR goes into standby, it will not restart again until either the camera has come out of standby mode or the camera is re-switched on, then half pressing again brings it back to life.

In order to use it I set the standby on the camera to 4 secs. either you have to keep half button focusing during shooting and or rewake the camera after it's 4 sec doze.

I've puzzled as to if the lens had taken a tumble and broken the stops that prevent the VR lens elements from moving too much inside, however what causes the VR to not restart when focusing again without the camera also coming out of standby, I don't understand. I've been in and fixed the AF but have never looked at the VR system which Nikon want â‚¬300 to repair!

I have responded to at least two other forums posters who have exactly the same fault!

For me IBIS will be a reason not to buy the camera. And I know I might be wrong, but with two Pentax cameras I always had focus problems. Or expected more sharpness than they actually could deliver. I know, stabilisation can be a help when having no tripod at hand, but I also experienced failing of these techniques and have enough lenses without VR. Then I am sure nothing moves in a way I can not foresee.

Quote:For me IBIS will be a reason not to buy the camera. And I know I might be wrong, but with two Pentax cameras I always had focus problems. Or expected more sharpness than they actually could deliver. I know, stabilisation can be a help when having no tripod at hand, but I also experienced failing of these techniques and have enough lenses without VR. Then I am sure nothing moves in a way I can not foresee.

Pentax is notorious for their slow unreliable AF, especially in older models (K10, K20, K5). I "vouch" for them. It has nothing to do with IBIS but everything to do with their AF module.

Olympus has IBIS in all their cameras and the sharpness is absolutely exemplary. The only thing than can potentially affect sharpness is shutter shock on certain models (the E-M1 is particularly bad in this respect).

Check Robin Wong's work if you have doubht about the sharpness you can get from Olympus gear:

Olympus has it, recent Sony and Panasonic bodies have it, Nikon Mirrorless has it, Canon full frame mirrorless camera is rumored to have it.

Hopefully, IBIS will make its way to lower tiered Fuji bodies, or they will risk being left behind. It makes sense that the X-T3 won't have it to avoid impacting the sales of the very recent X-H1, but in the long term I expect the Tx/Hx line will have to merge in the face of increased price pressure from the FF trio and of the need to simplify the lines.